Supporting device for incandescent mantles.



No. 733,522. PATENTED JULY 14, 1903. F. A. WARD & A. R. SELDEN.SUPPORTING DEVICE FOR INGANDESGBNT MANTLES APPLICATION FILED MAR. 21,1902.

N0 MODEL.

INVENTUHS mzxbnms vzrzns co; Pmmumu. WASHINGTON. o. c.

UNITED STATES Patented Jul 14, 1903-.

PATENT OFFICE.

FRANK A. \VARD AND ARTHUR R. SELDEN, OF ROCHESTER, NEW YORK.

SUPPORTING DEVICE FOR INCANDESCENT MANTLES.

SPECIFICATION forming part of Letters Patent No. 733,522, dated July 14,1903.

Application filed March 21,1902. Serial No. 99,319. (No model.)

To (LZZ whom it Wmg concern:

Be it known that We, FRANK A. ARD and ARTHUR R. SELDEN, citizens of theUnited States, and residents of Rochester, in the county of Monroe andState of New York, have invented certain new and useful Improvements inSupporting Devices for Incandescent Mantles, of which the following is aspecification.

This invention relates to supporting devices for incandescent mantles;and it consists in the devices hereinafter described and claimed.

The object of the invention is to provide a support that is easy toapply to lamps now in use and increases the life of the mantle byobviating much of the danger of breakage thereof.

In the drawings, Figure l is an elevation of the mantle-supportembodying this invention. Fig. 2 is an elevation of the modificationthereof. Fig. 3 is an elevation of another modification of themantle-support, a portion being omitted. Fig. 4 is an elevation fromanother point of view of a portion of the mechanism shown in Fig. 2.Fig. 5 is a plan view of a detail of the mechanism shown in Fig. 2, andFig. 6 is an elevation of a' modification of the mode and means ofweighting the support.

Incandescent mantles of what is known as the Welsbach type are veryfrail and are apt to break when the fixture carrying the lamp or lightexperiences a sudden jar or shock, such as may occur in the ordinaryoperations of dusting and cleaning the fixtures, shades, &c., and thisinvention is intended to provide a yielding support for the mantle andto employ the inertia of a weighted body to tend to maintain thestationary position of the mantle when the fixture is jarred or movedsuddenly.

In the accompanying drawings, A represents a mantle of the Welsbachtype, which is supported from its upper end, as usual. Figs. 2, 4, and 5show the preferred form of the device.

13 is an arm for supporting the mantle A, which may have such form asmay be demanded by the circumstances of the case. As an example of theinvention this arm is shown herein as consisting of the standardcorrespondingly-slotted guide 0, attached to a stationary part of thefixture, such as the sleeve or cap 0, that fits and forms part of thefixed burner of the fixture, and has, as shown, a wire-gauze top 0 asshown in Fig. 4. The standard B terminates in an end adapted forconnection with the supportingspring D. One mode of connecting thespring and the standard B is to provide a socket b in the end of thestandard,into which the end d of a coiled springD is set. This springhas separated coils, and the upper end is set, preferably, in the axesof the coils, and the spring is fastened in any suitable way to asupport 0, attached to a stationary part of the fixture, such as the cap0. The springD may be attached to the support 0, as shown herein, bydrilling a suitable number of holessay three-in said support and passingthe end d of said spring through said holes, as shown in Fig. 2. Theflattened portion 12 of the standard B passes through a slot in theguide a, that fits said flattened portion 12 so as to permit freemovement of the standard, but without unnecessarily loose movement, sothat the standard is maintained in the vertical position by theengagement of the support 0' and the connection of the spring Dtherewith.

For convenience of manufacture or in order that this invention maybeapplied to caps 0 now in use the guide 0 and the} support 0 are madein one piece with a portion 0 that is attached to the cap 0. I

It will be obvious that the upper part of the standard B may movevertically in correspondence with compressions and expansions of thespring D and may also move universally in limited arcs in substantiallyhorizontal directions because the support a is comparatively thin andthe spring D may flex sidewise. After any such fiection thespring bringsthe support back to the vertical position.

Adjacent to the upper end of the mantle the arm or standard B issuitably weightedas, for instance, by attaching thereto a relativelyheavy ball 6. Preferably the weight should be at or near the point ofsupport of the mantle. The inertia of a weight in the position statedtends to maintain the point of support of the mantle in a fixed positionnotwithstanding any shock or jar imparted to thefixture. The universalmovement of the spring-supported standard B and the long leverage fromthe Weighted portion of the standard to the fulcrum formed by the guide0, as compared with that of the short arm of the lever extending fromsaid guide to the spring, produce a delicately-hung device forsupporting said mantle and obviates disadvantages of a rigid supporttherefor.

In case the spring D is heated, and therefore twists, the supporting-armcannot turn because the upper end of the spring can turn in its socketand the flattened part b of the support is held in the slotted guide 0.

The support is placed in the guide 0 in any suitable wayas, forinstance, by parting the guide on a line 0 Fig. 5, extending into theslot therein, separating the parted ends, inserting the flattened part bof the support therein, and then bringing the parted ends of the guidetogether.

The spring D is placed as low as possible below the sleeve Gin order toremove it from the action of the heat of the burner, and it is made of asmall spring-wire, while the standard B is made of a heavier materialthat is heat-resisting.

Fig.1 represents another construction of the device, dispensing with theguide 0. (Shown in Figs. 2, at, and 5.) The spring D of Fig. 1 is woundclosely together at its upper portion and is smaller in diameter thanthe main part of the spring. The lower partis wound closely together atthe bottom, as shown at (Z and the middle portion is wound loosely orwith the coils separated. The end d is adapted to be set upon a lug onthe support 0, While the upper closely-wound portion d fits upon thestandard 13', carrying the weight b while the middle portion is free toconstitute a universal joint and spring-support for the standard B. Thelower end of the standard 13' may, if desired, continue down through thespring and out through the standard 0 with asquare or non-circular end 0fitting in a perforation of similar shape in the portion a of thestandard 0 which carries the spring. Thus the action of the spring Dwhen heated and cooled will not cause rotation of the standard and alateral or transverse movement of the mantle A with reference to the cap0.

Fig. 3 shows still another modification of the device in which the cap 0has an arm 0 carrying a socket 0 in which is fastened a coiled spring Dhaving large coils, the axes of which coils substantially coincide withthe axis of the cap C The upper end of the spring is fastened in anysuitable manner to the standard B as, for instance, by the collar bUnder the influence of heat the uncoiling of the spring D will causerotation of the mantle about the axis of the cap C and the movement ofthe mantle need not be lateral or transverse with reference to the cap.

Instead of supporting the spring of any of these devices from the cap itmay be support-- ed from any suitable stationary part of the fixtureas,for instance, from a part of the frame, such as E, Fig. 3or a doublesupport may be employedto wit, both the cap and the part E of thefixture.

In reference to weighting the mantle-support, Fig. 6 shows amodification of the abovedescribed freely-movable supporting devices forcarrying the mantle. The mantle A is freely connected to a weight havinga suitable form, such as the ball I), and said weight has a freeconnection to the support B. These connections may be by wire rings orloops a a, preferably made of platinum. The weight then constitutes apart of the mantle-support and the proper inertia is provided. Thejoints or connections between the mantle and the supportingstandard Bare universal joints,and though the standard or mantle may move theinertia of the weight 1) tends to preserve fixity of position of thepoint of support of the mantle. The standard B may have thespring-supports to yield to vertical movements shown in the otherfigures. The standard B, B, or B with its spring device D, D, Y

or D constitutes a spring-supporting arm for carrying the mantle.

Numerous changes may be made in the elements and combinations of thespecific forms of device shown in the drawings without departing fromthe spirit of this invention as expressed in the following claims.

What we claim is- 1. The combination of an incandescent mantle and afreely-movable supporting device for carrying the mantle, which arm isWeighted adjacent to the upper end of the mantle thereon, substantiallyas described.

2. The combination of an incandescent mantle, and a spring-supportingarm for carrying the mantle, which arm is weighted adjacent to the upperend of the mantle thereon, substantially as described.

3. The combination of an incandescent mantle, and a spring-supportingarm for carrying the mantle, which arm is so weighted that its inertiatends to maintain the mantle in a fixed position, substantially asdescribed.

at. The combination of an incandescent mantle, a spring-supporting armfor carrying the mantle, which arm is weighted adjacent to the upper endof the mantle thereon, and means for preventing lateral or transversemovement of the point of support of the mantle with reference to theburner, substantially as described.

5. The combination of an incandescent mantle, a spring-supporting armfor carrying the mantle, which arm is so weighted that its inertia tendsto maintain the mantle in a fixed position, and means for preventinglateral or transverse movement of the point of support of the mantlewith reference to the burner, substantially as described.

6. The combination of an incandescent mantle, a freely-movablesupporting device for carrying the mantle, which supporting device isweighted adjacent to the upper end of the mantle, and a spring-supportfor said supporting device, substantially as described.

7. The combination of a fixed burner, an incandescent mantle, auniversally-movable spring-supporting device for carrying the mantle,which supporting device is weighted adjacent to the upper end of themantle thereon, substantially as described.

8. The combination of a fixed burner, an incandescent mantle, astandardfor supporting the mantle, which standard is weighted adjacent to theupper end of the mantle there on, a guide for said standard permittingvertical movement thereof, and a spring-support for said standard havinga fixed support, substantially as described.

9. A fixed burner, an incandescent mantle, a mantle-support having auniversal movement, embodying freely-yielding mechanism weightedadjacent to the upper end of the mantle thereon, and tending to maintainthe support in a definite position, substantially as described.

10. A fixed burner,an incandescent mantle,

a mantle-support ihaving a universal move= ment, and freely-yieldingspring mechanism tending to maintain the mantle-support in a definiteposition, substantially as described;

11. A fixed burner,anincandescent mantle, a substantially verticalstandard for supporting the mantle, which standard is Weighted adjacentto the upper end of the mantle, a guide for said standard in which saidstandard may rock and may move longitudinally, a spring-support for saidstandard, and a support for said spring-support, said guide and saidlast-mentioned support being attached to fixed portions of the fixture,substantially as described.

12. A fixed burner,an incandescent mantle, a vertical standard forsupporting the mantle weighted adjacent to the upper end of the mantlethereon, a guide for said standard permitting vertical and angularmovement thereof, a socket in the base of said standard, a coiled springhaving its end set in said socket, and a fixed support for said spring,substantially as described.

FRANK A. WARD. ARTHUR R. SELD'EN.

Witnesses:

O. M. PERKINS, F. BISSELL.

